This list is only a study guide, NOT a complete list of all the material on the test. Make sure to go through your lecture notes and power point slides before you try to answer these questions. Any material discussed in class is potential test material. Please bring questions to office hours or by appointment.
Study Sheet for Chap 8: Evolution
What is evolution? Result of inherited adaptations that enhance survival and reproduction of the organism in a particular environment
What is the name of the book that Darwin published? The Origin of Species Which discoveries, and scientists influenced Darwin most?
Species are created separately and at the same time
Earth and organisms are fixed and would not change and could not become extinct earth is only 6000 years old
Georges Buffon, George Cuvier, JeanBaptise, Charles Lyell
What is the difference between extinct and extant species?
Extinct Nonliving species
Extant living species
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What does it mean to be evolutionarily fit?
How well a species is able to reproduce in its environment
According to Darwin the mechanism of evolution is by _Natural selection_________ Review the main points of Natural Selection (lecture). What is the difference between natural selection and artificial selection?
Natural selection the process whereby organisms better adapted to their environment tend to survive and produce more offspring.
Artificial selection Process used by breeders and farmers
Natural selection can happen in 3 ways: directional, disruptional, and stabilizing selection. Know what these terms mean
Directional Individuals with one extreme of the range of variation in the population have higher fitness.
Disruptive Individuals with extreme phenotypes experience the highest fitness, and those with intermediate phenotypes have the lowest.
Stabilizing Take place when individuals with intermediate phenotypes are most fit. Variation occurs within most population. Don't forget about the age old question of How to determine the bin size?
We also discuss several other topics like How would the reaction rate be changed if more cl2 was added to the following chemical two reaction?
What are the causes of variation seen within population?
ANS: Mutation, crossing over , random alignment of chromosomes during meiosis and random fertilization of egg and sperm.
____Mutation________________ the only way new alleles are formed.
Define Artificial Selection, Sexual selection. Know examples mentioned in class
Which of the below statement is true? (Is it choice 1 or choice 2) 1) An individual can evolve. False
2) A population evolves, not an individual. True We also discuss several other topics like What refers to an organized range of content in one place?
Don't forget about the age old question of What is the meaning of hi in chemistry?
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True or False. Natural selection produces perfect organisms.